Rough, uneven cutting surfaces during laser cutting directly affect workpiece quality and production efficiency. This article systematically analyzes the common causes of this problem and provides professional solutions.
Core Causes and Countermeasures for Unsmooth Cutting Surfaces in Laser Cutting Machines
1. Inappropriate Process Parameters
Gas Issues: Insufficient gas purity or improper pressure is the main cause. Nitrogen purity must be ≥99.99% when cutting stainless steel, and oxygen purity is also crucial when cutting carbon steel. Excessive pressure will create eddies, while insufficient pressure will hinder slag removal.
Solution: Use high-purity gas and adjust the pressure according to the thickness of the sheet material (lower pressure is suitable for thinner sheets, and higher pressure is required for thicker sheets).
2. Abnormal Equipment Condition
Nozzle Wear: Worn or contaminated nozzles can disrupt airflow stability.
Lens Contamination: Contamination of the focusing lens leads to a decrease in beam quality.
Focus Misalignment: Inaccurate focus position significantly affects cutting quality.
Solution: Regularly inspect and replace nozzles; clean optical lenses on a regular basis; perform focus position calibration weekly.
3. Material and Speed Factors
Sheet Material Quality: Surface rust or impurities directly affect the cutting effect.
Speed Mismatch: Feed speeds that are too fast or too slow will result in a rough cut surface.
Solutions: Ensure the use of high-quality sheet material; adjust the cutting speed according to the thickness (Reference: 8-12 m/min recommended for 2mm stainless steel).
Optimization Suggestions: To obtain the best cut surface quality, it is recommended that operators establish a cutting parameter record sheet, regularly maintain the laser cutting machine's optical system, and optimize parameters for different sheet materials. Through systematic adjustments, the laser cutting machine can stably output smooth cut surfaces, significantly improving product quality. If you have any further questions, please contact RITMAN after-sales personnel for assistance. Welcome to inquire.